Marking pen



FIG. 1 is a front perspective view of a marking pen showing my newdesign.

FIG. 2 is a front elevation view of FIG. 1, a back elevation view beinga mirror image thereof.

FIG. 3 is a left side elevation view of FIG. 1, a right side elevationview being a mirror image thereof; and,

FIG. 4 is a top plan view of FIG. 1.

The broken lines in the drawings are included to show portions of themarking pen that form no part of the claimed design.

CLAIM The ornamental design for a marking pen, as shown and described.